公开(公告)号：US11848180B2

公开(公告)日：2023-12-19

申请号：US17040410

申请日：2019-03-22

Applicant: ADAPTAS SOLUTIONS PTY LTD

Inventor： Russell Jurek ,  Kevin Hunter

IPC: H01J43/18 ,  H01J43/10 ,  H01J47/00 ,  H01J49/02 ,  H01J43/28 ,  H01J49/28

CPC classification number: H01J43/18 ,  H01J43/10 ,  H01J43/28 ,  H01J47/002 ,  H01J47/005 ,  H01J49/025 ,  H01J49/288

Abstract: Components of scientific analytical equipment. More particularly, ion detectors of the type which incorporate electron multipliers and modifications thereto for extending the operational lifetime or otherwise improving performance. The ion detector may be embodied in the form of a particle detector having one or more electron emissive surfaces and/or an electron collector surface therein, the particle detector being configured such that in operation the environment about the electron emissive surface(s) and/or the electron collector surface is/are different to the environment immediately external to the detector.

公开(公告)号：US20160011319A1

公开(公告)日：2016-01-14

申请号：US14815750

申请日：2015-07-31

Applicant: Mirion Technologies Inc.

Inventor： Jukka Kahilainen ,  Thomas Logan

IPC: G01T1/02 ,  H01J47/02

CPC classification number: G01T1/026 ,  G01T1/02 ,  G01T1/14 ,  G01T1/185 ,  G01T1/24 ,  G01T1/244 ,  G01T3/00 ,  G01T3/08 ,  G01T7/00 ,  H01J47/002 ,  H01J47/005 ,  H01J47/02 ,  H05K5/0278

Abstract: A direct ion storage (DIS) radiation detector or dosimeter has a design that is easy and low cost to manufacture using semiconductor processing techniques. The detectors include internal communications interfaces so they are easy to read. Different interfaces, including wired, e.g. USB ports, and wireless interfaces, may be used, so that the dosimeters may be read over the internet. The detectors can thus be deployed or used in a variety of detection systems and screening methods, including periodic or single time screening of people, objects, or containers at a location by means of affixed dosimeters; screening of objects, containers or people at a series of locations by means of affixed dosimeters, and surveillance of an area by monitoring moving dosimeters affixed to people or vehicles.

Abstract translation: 直接离子存储（DIS）辐射检测器或剂量计具有使用半导体处理技术制造成本容易且成本低的设计。 检测器包括内部通信接口，因此易于阅读。 不同的接口，包括有线，例如 可以使用USB端口和无线接口，使得可以通过互联网读取剂量计。 因此，检测器可以被部署或用于各种检测系统和筛选方法中，包括通过固定的剂量计定期或单次对人，物体或容器进行筛选; 通过固定剂量计对一系列地点的物体，集装箱或人员进行筛查，并通过监测贴在人员或车辆上的移动剂量计监视区域。

公开(公告)号：US09134430B2

公开(公告)日：2015-09-15

申请号：US12936357

申请日：2009-04-06

Applicant: Jukka Kahilainen ,  Thomas Logan

Inventor： Jukka Kahilainen ,  Thomas Logan

IPC: G01T1/24 ,  G01T1/02 ,  G01T1/14 ,  H01J47/00 ,  H01J47/02 ,  G01T3/08 ,  G01T3/00 ,  H05K5/02 ,  G01T1/185 ,  G01T7/00

CPC classification number: G01T1/026 ,  G01T1/02 ,  G01T1/14 ,  G01T1/185 ,  G01T1/24 ,  G01T1/244 ,  G01T3/00 ,  G01T3/08 ,  G01T7/00 ,  H01J47/002 ,  H01J47/005 ,  H01J47/02 ,  H05K5/0278

Abstract: A direct ion storage (DIS) radiation detector or dosimeter has a design that is easy and low cost to manufacture using semiconductor processing techniques. The detectors include internal communications interfaces so they are easy to read. Different interfaces, including wired, e.g. USB ports, and wireless interfaces, may be used, so that the dosimeters may be read over the internet. The detectors can thus be deployed or used in a variety of detection systems and screening methods, including periodic or single time screening of people, objects, or containers at a location by means of affixed dosimeters; screening of objects, containers or people at a series of locations by means of affixed dosimeters, and surveillance of an area by monitoring moving dosimeters affixed to people or vehicles.

Abstract translation: 直接离子存储（DIS）辐射检测器或剂量计具有使用半导体处理技术制造成本容易且成本低的设计。 检测器包括内部通信接口，因此易于阅读。 不同的接口，包括有线，例如 可以使用USB端口和无线接口，使得可以通过互联网读取剂量计。 因此，检测器可以被部署或用于各种检测系统和筛选方法中，包括通过固定的剂量计定期或单次对人，物体或容器进行筛选; 通过固定剂量计对一系列地点的物体，集装箱或人员进行筛查，并通过监测贴在人员或车辆上的移动剂量计监视区域。

公开(公告)号：US20040056206A1

公开(公告)日：2004-03-25

申请号：US10254465

申请日：2002-09-25

Applicant: CONSTELLATION TECHNOLOGY CORPORATION

Inventor： Alexander I. Bolozdynya ,  Aleksey E. Bolotnikov ,  Stephen M. Schindler

IPC: G01T001/18

CPC classification number: G01T1/185 ,  G01T1/1642 ,  H01J47/005

Abstract: An ionization chamber is provided for the detection of nuclear radiation. The chamber is a vessel which acts as a cathode wherein at least one anode is disposed within the chamber and off-set from a center axis of the chamber. The chamber can be made from variety of shapes but is cylindrical in the preferred embodiment. The device contains two anodes in the preferred embodiment which are both off-set from the center axis. One anode collects the free floating electrons which are produced in response to particle ionization and therefore has a collected charge applied thereto. The second anode has the charge induced by immobile ions. The induced charge is subtracted from the collected charge thereby providing an improved resolution for the ionization chamber which translates into a more accurate result. In the preferred embodiment, a pressurized noble gas, such as xenon, is used. In some special geometries of the chamber, one of the anodes becomes part of the cathode and the charge induced by immobile ions becomes negligibly low. Thus the subtraction of the induced charge is not required.

Abstract translation: 提供电离室用于检测核辐射。 该室是用作阴极的容器，其中至少一个阳极设置在室内并且从室的中心轴线偏离。 腔室可以由各种形状制成，但在优选实施例中为圆柱形。 该装置在优选实施例中包含两个从中心轴偏离的阳极。 一个阳极收集响应于颗粒电离而产生的自由浮动电子，因此施加了收集的电荷。 第二阳极具有由固定离子引起的电荷。 从收集的电荷中减去感应电荷，从而为电离室提供改进的分辨率，从而转化为更准确的结果。 在优选实施例中，使用诸如氙的加压惰性气体。 在室的一些特殊几何形状中，一个阳极成为阴极的一部分，并且由固定离子引起的电荷变得可忽略不计。 因此，不需要减去感应电荷。

公开(公告)号：US4879469A

公开(公告)日：1989-11-07

申请号：US193527

申请日：1988-05-13

Applicant: Frank A. DiBianca

Inventor： Frank A. DiBianca

IPC: G01T1/185 ,  H01J47/00

CPC classification number: G01T1/185 ,  H01J47/005

Abstract: A detection medium for a kinestatic charge detector is a mixture of gases, typically including at least one noble gas such as zenon or krypton. The medium can be pressurized to improve resolution and temperature can also be applied to the medium for improving resolution. Various additive or dopant gases can also be introduced to improve resolution.

Abstract translation: 用于活性电荷检测器的检测介质是气体的混合物，通常包括至少一种惰性气体，例如天on或氪。 介质可以被加压以提高分辨率，也可以将温度应用于介质以提高分辨率。 还可以引入各种添加剂或掺杂气体以改善分辨率。

公开(公告)号：US4695731A

公开(公告)日：1987-09-22

申请号：US762008

申请日：1985-08-02

Applicant: Keith J. Larkin

Inventor： Keith J. Larkin

IPC: G01T1/185 ,  G01T1/29 ,  H01J47/00 ,  H01J47/02

CPC classification number: H01J47/02 ,  H01J47/005

Abstract: To enable an ionization chamber used for measuring the intensity of a beam of ionizing radiation, for example an electron beam produced by a linear accelerator and used for radiotherapy, both to give an output signal which is independent of ambient pressure and temperature and to present a low weight of scattering material per unit area to the beam, the chamber is of flexible construction so that the volume of gas in it adapts to ambient pressure and temperature, and such that the weight of gas in the active region between the electrodes per unit area remains substantially constant. Suitably, the electrodes are conductive layers on flexible plastics sheets, an outer annular portion of one sheet providing a flexible connection between two opposed chamber wall portions which remain substantially planar and parallel; the proportional change (.DELTA.V.sub.1 /V.sub.1) in a volume bounded by the opposed wall portions and including the active region equals the proportional change (.DELTA.V.sub.2 /V.sub.2) in the remainder (V.sub.2) of the internal volume.

Abstract translation: 为了实现用于测量电离辐射束的强度的电离室，例如由线性加速器产生并用于放射治疗的电子束，可以给出独立于环境压力和温度的输出信号，并呈现 每单位面积的散射材料重量与梁的重量相差，室内结构柔软，使得其中的气体体积适应环境压力和温度，并使每单位面积电极之间的有源区气体重量 保持基本恒定。 适当地，电极是柔性塑料片上的导电层，一片的外环形部分提供两个相对的室壁部分之间的柔性连接，其保持基本平坦和平行; 由相对的壁部分限定并包括有源区域的体积中的比例变化（DELTA V1 / V1）等于内部体积的余数（V2）中的比例变化（DELTA V2 / V2）。

公开(公告)号：US4309307A

公开(公告)日：1982-01-05

申请号：US134815

申请日：1980-03-28

Applicant: Loucas G. Christophorou ,  Dennis L. McCorkle ,  David V. Maxey ,  James G. Carter

Inventor： Loucas G. Christophorou ,  Dennis L. McCorkle ,  David V. Maxey ,  James G. Carter

IPC: H01J47/00 ,  C09K3/00 ,  H01J39/28 ,  H01J39/30

CPC classification number: H01J47/005

Abstract: Improved binary and ternary gas mixtures for gas-filled radiation detectors are provided. The components are chosen on the basis of the principle that the first component is one molecular gas or mixture of two molecular gases having a large electron scattering cross section at energies of about 0.5 eV and higher, and the second component is a noble gas having a very small cross section at and below about 1.0 eV, whereby fast electrons in the gaseous mixture are slowed into the energy range of about 0.5 eV where the cross section for the mixture is small and hence the electron mean free path is large. The reduction in both the cross section and the electron energy results in an increase in the drift velocity of the electrons in the gas mixtures over that for the separate components for a range of E/P (pressure-reduced electric field) values. Several gas mixtures are provided that provide faster response in gas-filled detectors for convenient E/P ranges as compared with conventional gas mixtures.

Abstract translation: 提供了用于气体充满的辐射探测器的改进的二元和三元气体混合物。 基于第一组分是能量约为0.5eV以上的电子散射截面大的两种分子气体或两种分子气体的混合物的原理来选择组分，第二组分是具有 大约1.0eV以下的非常小的横截面，由此气体混合物中的快速电子减慢到约0.5eV的能量范围，其中混合物的横截面小，因此电子平均自由程大。 横截面和电子能量的减少导致气体混合物中的电子的漂移速度与用于E / P（减压电场）值范围的单独部件的漂移速度增加。 提供了几种气体混合物，与常规气体混合物相比，在充满气体的检测器中提供更快的响应，方便E / P范围。